Hmmm... when we've been there, I'd say 90/10 regular to AN.... We haven't seen more than 8 or 9 couples total on the AN beach at any one time, but that's just our experience. I know there are times where there are a LOT more people there.

We have been to CSS many times and are SSB regulars. I would estimate that on any
given day, there are about 15-20 % of the guests at SSB. Depends on the occupancy.
If you are looking for number of people there daily, I would estimate around 20-45
people on average.
"Once you go...you know."
Steve & Victoria

When we have visited CSS, it seems like there have been more people on the main beach, but those who do spend their time at Sunset Beach (AN) typically spend the majority of their time there. There is also the pool-oriented people (main pool and mineral pool). I think the best part of CSS (and probably the other resorts as well) is that it is sized just right so that there is space for everyone. We have been in peak season (mid-February) as well as not-so peak season (Jan and April), and have never felt any area to be crowded. I never felt pressured to spend time in any particular area, AN or otherwise, based on # of people or any other factor. This doesn't exactly answer your question, but I hope it gives you some useful insight. You'll figure out where you want to spend your time once you get there!

We spend all our time on the main beach, hubby is not a fan of AN or the water there. The main beach is man made but it is close to the bar and food plus the water is much warmer (the AN beach is rockier and the water is colder since there is a river that comes out there, much more natural area, i think) either one is a winner since the AN has its own bar, pool, restrooms, jacuzzi and grill.

in answer to your question(which I honestly can't answer) as a whole, we have gone in may and october and neither beach felt crowded or that were were more people than seats

Well thanks for all the replies and insight. I had been reading a lot of reviews planning our upcoming trip and noticed a few people posting that it was like they had the resort to themselves. I was just wondering where most folks spent their time. I guess we'll just have to see where we like hanging out, looking forward to it, thanks again.

We go to CN during peak season, and it just never seems crowded even though they are at 100%. I believe it is they way the beach is laid out and the mix of couples who are there. As for those % I would have no idea since we do not do the AN, but I would guess the 80 - 20 split is about right.